Title:
ROTARY VANE COMPRESSOR WITH HYDROFLUOROOLEFIN REFRIGERANT GAS AND HIGH SPEED TOOL STEEL VANE.
Document Type and Number:
WIPO Patent Application WO/2011/024826
Kind Code:
A3
Abstract:
A2 refrigerant mainly containing a carbon - carbon double bond- containing hydrofluoroolefin has a function to suppress abrasive wear, compared to conventional HFC-based refrigerants, because the hydrofluoroolefin generates iron fluoride especially on the surface of the vane and piston, where sliding force is severe, from hydrogen fluoride, even if it is generated in reaction with water and oxygen. It is possible to reduce abrasive wear, by using a refrigerant containing as the base component a hydrofluoroolefin as operating refrigerant and a refrigeration oil 3 miscible with the refrigerant and a vane 10 made of a high-speed tool steel and sintered and quenched, because hydrogen fluoride generated by decomposition of the refrigerant in the region of a vane tip region 10a and a piston 9 peripheral surface, where sliding force is severe is converted to iron fluoride. It is also possible to obtain a hardened structure containing carbides of W, Mo, Cr and V dispersed in a fine martensite matrix and produces the rotary compressor more cost - effectively by quenching and sintering the vane 10.
Inventors:
NAKANO MASAO
IIDA NOBORU
KARINO TSUYOSHI
IIDA NOBORU
KARINO TSUYOSHI
Application Number:
PCT/JP2010/064321
Publication Date:
October 27, 2011
Filing Date:
August 18, 2010
Export Citation:
Assignee:
PANASONIC CORP (JP)
NAKANO MASAO
IIDA NOBORU
KARINO TSUYOSHI
NAKANO MASAO
IIDA NOBORU
KARINO TSUYOSHI
International Classes:
F04C18/356
Domestic Patent References:
| WO1992018772A1 | 1992-10-29 |
Foreign References:
| EP1209361A1 | 2002-05-29 | |||
| US20060078440A1 | 2006-04-13 | |||
| US20080240955A1 | 2008-10-02 |
Other References:
THOMAS J. LECK: "Evaluation of HFO-1234yf as a Potential Replacement for R-134a in Refrigeration Applications", 3RD IIR CONFERENCE ON THERMOPHYSICAL PROPERTIES AND TRANSFER PROCESSES OF REFRIGERANTS, BOULDER, CO, 2009, 26 June 2009 (2009-06-26), XP055005515
CALM ET AL: "The next generation of refrigerants - Historical review, considerations, and outlook", INTERNATIONAL JOURNAL OF REFRIGERATION, ELSEVIER, PARIS, FR, vol. 31, no. 7, 1 November 2008 (2008-11-01), pages 1123 - 1133, XP025408325, ISSN: 0140-7007, [retrieved on 20080210], DOI: 10.1016/J.IJREFRIG.2008.01.013
CALM ET AL: "The next generation of refrigerants - Historical review, considerations, and outlook", INTERNATIONAL JOURNAL OF REFRIGERATION, ELSEVIER, PARIS, FR, vol. 31, no. 7, 1 November 2008 (2008-11-01), pages 1123 - 1133, XP025408325, ISSN: 0140-7007, [retrieved on 20080210], DOI: 10.1016/J.IJREFRIG.2008.01.013
Attorney, Agent or Firm:
TANAKA, Mitsuo et al. (IMP Building, 3-7, Shiromi 1-chome,,Chuo-ku, Osaka-sh, Osaka 01, JP)
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